8.9*8.9+2*8.9*1.1+1.1*1.1
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Answer:
8.9*8.9+2*8.9*1.1+1.1*1.1 = 100
Step-by-step explanation:
8.9*8.9+2*8.9*1.1+1.1*1.1
8.9*8.9+2*8.9*1.1+1.1*1.1
= (8.9)² + 2*8.9*1.1 + (1.1)²
a² + 2ab + b² = (a + b)²
here a = 8.9
b = 1.1
= (8.9 + 1.1)²
= 10²
= 100
8.9*8.9+2*8.9*1.1+1.1*1.1 = 100
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